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Arthur St. Clair commanded the Pennsylvania Line and fought in
the Battle of Trenton and Princeton. He wintered in Morristown during
1779-80

Arthur St. Clair was born in Caithness County, Scotland in 1736.
He studied medicine at the University of Edinburgh and served
part of an apprenticeship with the renowned anatomist, William
Hunter. In 1757, St. Clair changed his career plans. He joined
the British Army, and spent five years in Canada during the French
and Indian War. He then purchased a substantial estate in western
Pennsylvania and worked as the agent of the colonial governor.
When the Revolution began, St. Clair joined the militia and fought
at Trenton and Princeton. His controversial command of Fort Ticonderoga
led to public criticism and a court-martial. Congress reinstated
him within the year, and he later fought at Yorktown.

After the war, St. Clair served two years in Congress and in
1787 was its president. He became Governor of the Northwest Territory.
War began there over Native American treaty negotiations. The
Miami chief, Little Turtle, decimated St. Clair's troops in a
1791 ambush near the Wabash River. Afterwards, St. Clair remained
in the governor's office until President Thomas Jefferson removed
him for his opposition to Ohio statehood in 1802. He then returned
to Pennsylvania and published a defense of his conduct during
the failed Northwest Territory campaign. St. Clair died on August
31, 1818.